If you live in Williamson County, there's a good chance that the Franklin Road widening project will affect you.

With construction set to begin this month, here's what you should know about the project before you hit the road.

1. Affected area.

The project will widen a 2.6-mile section of Franklin Road, running from Concord Road to south of Moores Lane, from two lanes to five lanes. It will include a continuous center turning lane, and two northbound and southbound through lanes.

A 10-foot multi-use path will be established on the east side of the roadway and 6.5-foot grass strip on the opposite side. New signals with turn lanes will be added at the intersections of Davenport Road and Holly Tree Gap Road.

2. Expect major traffic disruptions.

While access through Franklin Road will remain open during the project, it won't be completed until October 2020, according to TDOT spokeswoman Kathryn Schulte.

"The first year is mostly utility work, which will be at various locations along the entire length of the project," Schulte said.

Brentwood City Manager Kirk Bednar didn't mince words when he discussed the project in April. "It'll feel like a war zone. The two big issues will be maintaining traffic flow," Bednar said. "You'll have construction zone speed limits lower than they are today (and) there will be narrower lanes. So while there will still be two lanes, it won't flow with the same capacity it has today."

3. Why the need?

Average traffic counts along Franklin Road show 23,000 vehicles per day drive through the corridor. It's considered a north-south alternative to driving on I-65.

"When there's an accident on the interstate, everyone goes to Franklin Road," said Deanna Lambert, Brentwood's community relations director, earlier this year.

4. Who's paying?

TDOT is funding most of the $37 million project. Brentwood has a development agreement in place, which means the city has paid roughly $800,000 for the engineering design and about $3 million in right-of-way acquisition expenses from properties within the city.

TDOT estimates construction costs for the project to be $33.8 million, Bednar said. There is a small portion of right-of-ways within the City of Franklin, which has agreed to acquire at its own cost.